When something is peak, its a cuss that makes your opponent upset and can't bring comebacks. So basically you have won.
Justin: Well, your teeth are so yellow that when its pitch black and you smile people think its morning so they get up. Your teeth is even brighter than the sun.
Simon: That was really peak. That was so peak that she has shut up.
It can refer to an excellent or top quality situation/object/event/person. (1)
Curiously, it can also refer to a very negative situation. (2)
2) Dude, your girl is giving you bare shit nowadays, that's peak.
Badman: "Peak for you son"
Homeboy #1 "You got a roach ?"
Homeboy #2 "Na fam , fresh out cuz"
Homeboy #1 "Peak , needed that shit!"
Jimmy: Yeah who am i kidding? That was peak! WAL!
When something beyond comprehension has happened to you or some one else you know, positive or negative you say the word peak to portray the sheer level of OMG
Peak times are times where life has thrown some crazy stuff at you and everything is just WOAAAAAAAH.
Usually a hand sign is involved which symbolises a mountain peak. If something is that deep the word doesn't even have to be said, you can just do the hand sign
When someone has been embarrassed so much so you feel the need to acknowledge the extent to which they have been wrecked
Friend: Peak times for you
Girl: Did you hear Jessy is pregnant!!!
HeadTeacher: Why are you wearing that belt, its against school regulations, do you think it looks SEXY- because it doesn't
Class: OOOOOOOooo *giggles*
A few members of class: Peak